1 . 设命题
函数
在
上为增函数;命题
函数
为奇函数.则下列命题中真命题的个数是______ .
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b21c310a00732a9eda5489e225bd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe141d6b910aed5a0fdceb57a030de76.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f602c916a51570813855222577ba372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa115c7efe7cfab7d9a27243bea1641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e29e70dc0bc2a9cf1a5feb67d439566.png)
您最近一年使用:0次
2 . “
为假”是“
为真”的___________ 条件(填“充要”“充分不必要”“必要不充分”或“既不充分也不必要”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
您最近一年使用:0次
解题方法
3 . 已知p:如果数列
是等比数列,那么数列
也是等比数列;q:如果数列
是等差数列,那么数列
也是等差数列.以下哪些为真命题___________ .
①p∧q
②p∨q
③
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3523ba3e007b23175ebc813bc9843510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3523ba3e007b23175ebc813bc9843510.png)
①p∧q
②p∨q
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb9d57cbe246df4aa7b2e12e4aed9ed.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a464aa880b9557686ddf53396129166.png)
您最近一年使用:0次
4 . 已知命题p为假命题,命题q为真命题,在命题:①
②
③
④
中,真命题的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e48ebdd742cb5d310c21a384d599bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6777065ed14d76944be5cb45d9e2c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df555956505b2a9ac2fbc061adcff221.png)
您最近一年使用:0次
名校
5 . 已知命题
:若
,则
;命题
,
,在命题:①
;②
;③
;④
中,真命题的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35c8885d9205b2744c8419e498e1a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21208364124b5c477b2ff8df1c2e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fb1cdc03f2887c71fbe777b64fc6c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc7d6a9b8b8ffa51f6dbfe6e405bea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e29e70dc0bc2a9cf1a5feb67d439566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e796d1dba0132636cb56a325d57add1d.png)
您最近一年使用:0次
名校
解题方法
6 . 已知曲线
有如下命题:
:若
,则C是椭圆,其焦点在y轴上
:若
,则C是圆,其半径为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d249094ecb996458e35182d6b461299.png)
:若
,则C是双曲线,其渐近线方程为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1004e11a5ef46b2db577ed722c2ee96.png)
:若
,
,则C是两条直线
则下述命题中所有真命题的序号是______ .
①
②
③
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff41b0435e120094baed2e8e37353ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66eba129d92ede31b728e2590c4db2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ba433823cf6f0c5d158fa909f9f600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d249094ecb996458e35182d6b461299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdc69abbcdf98c42b649f8d8d4cd1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1004e11a5ef46b2db577ed722c2ee96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
则下述命题中所有真命题的序号是
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9c83bf13d2f96cbdd608ee584689f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7af433a01e0819931d64d634b705e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e858fdc645ebd05bd592a6242307c4d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2642056a7589d42f6712e53c593a8444.png)
您最近一年使用:0次
7 . 已知命题:
若
,则直线
不经过第二象限;
:抛物线
的焦点在圆
的内部;
:若两个平面的法向量互相垂直,则这两个平面垂直;
:若直线
的方向向量与平面
的法向量垂直,则必有
.
下列命题中所有真命题的序号是__________ .
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a617a9b648bfb804eb7ac1cf357f8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af881f169f1f909de7a27cccf4d6f47f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0c7157871c268893342e5ba6c35188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e091bcc3593e18e1a771fcb2ffd42aff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3bb17792af0a820af4b98586ed02e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff259ba50b735db32427fc0ebfbdfdaf.png)
下列命题中所有真命题的序号是
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586e98555015d11f2b8d8b7702965336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7af433a01e0819931d64d634b705e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b4e53bf6e9c26e2f849d430d4e083f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a758b377cf6271c8b45464bc0051d5.png)
您最近一年使用:0次
8 . 设
、
是两个不同的平面,
、
是两条不同的直线,
命题
若
,
,
,则
;
命题
若
,
,
,则
.
下列命题是真命题的是_______________ .
①
或
②
且
③
或
④
且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1754786a3367aca3da18ee3316e5b968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f157205cb5cb4a538b09d989f2d9ae95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18839099fb51cb1dda11653615ad0a5c.png)
命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff259ba50b735db32427fc0ebfbdfdaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb26a220ed44c446105df7caa0f1063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f157205cb5cb4a538b09d989f2d9ae95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44eee93d951b5a5b892fbfb0acde47af.png)
下列命题是真命题的是
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
您最近一年使用:0次
名校
9 . 已知命题p:2是质数.命题q:正切函数
的图象与垂直于x轴的直线有且只有一个公共点,则
,
,
,
这四个命题中真命题的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6659e3aec36b969f21633c5efe3ac46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e442eb9fae52d740b600bff0ee4aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
您最近一年使用:0次
名校
10 . 已知命题p:存在x∈R,使tan x=3,命题q:
的解集是{x|
},现有以下结论:①命题“p且q”是真命题;②命题“p且¬q”是真命题;③命题“¬p或q”是假命题;④命题“¬p或¬q”是真命题.
其中正确结论的序号为____________ .(写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec81343880dbd3be071f4c7d3ff014a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2668e1a2b859af2eee60d412a460ea.png)
其中正确结论的序号为
您最近一年使用:0次